These tiny metal threads keep odor and bacteria from building up in clothes as people do yoga. Hospitals, on the other hand, want to prevent the smell of burning. Warning signs—some mentioning the popular yoga clothing brand Lululemon Athletica—are plastered in radiologist offices across the country. “These fibers can burn you if worn in the MRI scanner,” one reads.
A selection of Lululemon’s products are created with “Silverescent” technology, a fabric that incorporates silver-bonded threads to inhibit the growth of odor-causing bacteria on the garment, a company spokesperson said.